This is a rare evil heroine, neither a novice nor omnipotent.
The heroine's personality can only be described in two words, that is, "peculiar". She insists that she must avenge her and not necessarily repay her kindness. I would rather betray the world than let the world betray me.
The heroine is not kind, she is the kind of person who won't feel at ease even if you step on my bottom line and I will send you to hell (a bit scary). However, she is still very reasonable and usually doesn't pay much attention to others, and her personality is a bit indifferent.
Quotes from the heroine: My heart is small and can only accommodate a few people. Does the life and death of those strangers have anything to do with me?